public void should_not_succeed_when_the_property_contains_a_different_value()
        {
            var contract = Contract.For("Closed");

            _builtPredicate(contract).ShouldBeFalse();
        }
        public void should_succeed_when_the_property_contains_the_exact_value()
        {
            var contract = Contract.For("Open");

            _builtPredicate(contract).ShouldBeTrue();
        }